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Recent studies have raised concern about `heading' in youth soccer (i.e., hitting the ball with the head). A soccer player `heads' a size 4 ball deflecting it by 59.0°, and keeps its speed of 16.70 m/s constant. A size 4 ball has a mass of approximately 2.000 kg. What is the magnitude of the impulse which the player must impart to the ball?
If the player's head has a mass of 3.50 kg, what is the magnitude of the average acceleration of the player's head during the impact. Assume that over the brief time of the impact, 28.90 ms, the player's head can be treated separately from the player's body.
Quarterback passed a ball to a receiver while running at 1.5 m/s forward. The ball was released at a height of 2.5 meters with an angle of 45 degrees, Find the final velocity of the ball and its direction
what is the initial velocity of a silver bullet if it completely melts when striking a werewolf? the initial temperature of the bullet is 300
An airplane flies eastward and accelerates uniformly. At one position along its path it has a velocity of 26.7 m/s. Find the airplane\'s acceleration
compute how much charge must be placed on the surface of a sphere of radius 0.31 m for the electric potential just above the surface to be 100 V. Assume that the charge is uniformly distributed.
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 83.7 N, Jill pulls with 91.9 N in the northeast direction, Find the magnitude of the net force the people exert on the donkey
Estimate the minimum absolute pressure (in pascals) that can be developed at the inlet of a pump to avoid cavitation if the fluid is carbon tetrachloride at 20 celsius
After a golf ball is hit it takes off with an initial speed of 26.2 m/s and at an angle of 39.5° with respect to the horizontal. The golf field is flat and horizontal.
A thin sheet of transparent material has an index of refraction of 1.80 and is 24.0 µm thick. how many fringe shifts occur in the pattern
What is the speed of the 2 cars as they move together after the collision.
A projectile is fired straight upward from the Earth's surface at the South Pole with an initial speed equal to one third the escape speed. What is the altitude of the projectile at this instant
Workers pushing a 180-kg trunk across a level floor encounter a 10-m long region where the floor becomes increasingly rough; the coefficient of kinetic friction enhancements.
A rowboat crosses a river with a velocity of 3.51 mi/h at an angle 62.5° north of west relative to water. The river is 0.8 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore.
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